Things to do in Tampa Bay for Sept. 13

Maroon 5 and Kelly Clarkson: The pop rock group behind This Love and Moves Like Jagger joins forces with Kelly Clarkson, the original American Idol winner-turned-Grammy winning behind tracks like Stronger and Since U Been Gone. Concert starts at 7 p.m. at the MidFlorida Credit Union Amphitheatre, 4802 U.S. 301 N, Tampa. $29.50-$99.50. (813) 740-2446.

AVP Pro Volleyball: The Association of Volleyball Professionals brings the action and stars of its Beach Volleyball Tour to town for a three-day stop. At 5 p.m. there's a concert by the band Offshore Riot, followed by a fireworks show. Matches begin at 9:30 a.m. in Vinoy Park, 501 Fifth Ave. NE, St. Petersburg. $15; 12 and younger free with adult ticket.

TO WATCH

SEASON PREMIERE Haven, 10 p.m., Syfy How do people on TV shows meet so many vital new characters in their lives in only six months? It's taken us decades to find any friends at all, and even they don't like us all that much.